Here is a link to images of a subadult male hesperus:I should have some more pictures tomorrow. She has that enclosure pretty webbed up.
That sounds like an adult male to me. As an adult, the palps are much different than the one in link, although still bulbous. Don't forgot the linked spider is a subadult, as yours was prior to molt (if in fact a male).It has two small black pedipalps....